TIME · FREE
Time Duration Calculator
Calculate exactly how much time sits between two clock times — with breaks and overnight schedules.
How does a time duration calculator work?
A time duration calculator finds the time between a start and an end. Enter both clock times, choose Next day when needed, and subtract breaks to get a realistic duration.
Calculate time between two times
Use it for work blocks, appointments, travel planning, and everyday tasks. The entire calculation stays in your browser and is never sent to a server.
Planning across midnight
For night shifts or late appointments, choose Next day. That turns 10:30 PM to 6:15 AM into a duration of 7 hours and 45 minutes instead of a negative time.
Frequently asked questions
How do I calculate the time between two times?
Enter a start and end time, then choose whether the end is on the same day or the next day. The calculator shows the exact duration in hours and minutes.
Can the time duration calculator subtract a break?
Yes. Enter the break length in minutes and it will be subtracted from the total so you can see the net duration.
Can I calculate time overnight?
Yes. Choose Next day when the end time is after midnight, such as 10:30 PM to 6:15 AM.
What can I do with the calculated duration?
Send the time to DayShift to turn it into a plan-ready time block for your day.
Are my times saved?
No. The calculation runs entirely in your browser. Your times are not uploaded or stored.